How long does Clobetasol foam drug stay in system after one week of use?

Used for poison ivy and I think I used the foam a few days too long after poison ivy stated drying out I have one calf muscle weakness the last day or so frequent urination and a bit of insomnia the last few days.

Added 9 Jun 2016:

All listed side effects.

Added 9 Jun 2016:

Also may have put on a heavier dose than recommended.

Added 9 Jun 2016:

Though the recommended application by my dermatologist of twice a day.